Optical see-through light field near-eye displays with multi-layer display panels
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Published on: September 6, 2017
Weijia Zhang1,2, Qingtian Zhang3, Shining Ma1,2
1State Key Laboratory of Chips and Systems for Advanced Light Field Display, School of Optics and Photonics, Beijing Institute of Technology, Beijing 100081, China.
Abstract:
Light field near-eye displays are promising for alleviating the vergence-accommodation conflict (VAC), yet their implementation in optical see-through augmented reality (AR) systems remains challenging. Microstructure-array-based approaches suffer from a spatial-angular resolution trade-off, while conventional multi-layer architectures place stringent demands on image quality and computational accuracy. Here, we present an optical see-through light field near-eye display based on multi-layer display panels and off-axis eyepieces. The proposed architecture avoids backlight occlusion while preserving the native spatial resolution of the display panels. To support this design, we develop a light field decomposition method for generating optimized multilayer modulation images and introduce a high-order polynomial precorrection method to compensate for irregular off-axis distortion. A binocular prototype using three liquid crystal display (LCD) panels is built and tested. The results demonstrate that the proposed system achieves optical see-through three-dimensional (3D) imaging with clear monocular focus cues, correct binocular parallax, and a geometrically corrected image field after distortion correction.
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